The average MPG for a used Hyundai TUCSON Hybrid will vary. Depending on your driving style, the distances you drive and the type of engine you choose will determine the optimum MPG. The Hyundai TUCSON Hybrid is a family SUV so is most suitable for commuting or longer distance driving. The newest range of TUCSON Hybrid features a Plug-in hybrid with the capability to achieve a combined 124.9 MPG and 38 miles of all electric range in optimum conditions.